ELEKTROGAS – Technical Sheet EE175 - 0117
3-16
Description
The VMH type valve is a safety shut off valve for gas with hydraulic actuator. It is suitable for air
or gas blocking and releasing controls, required in the main pipe of gas power burners,
atmospheric gas boilers, industrial kilns and others gas consuming appliances.
See Tab. 2 for maximum operative pressure for every model.
Features
The valves are made of aluminum alloy with a range for connections from DN 65 up to DN 300.
Pipe connections meet group 2.
Suitable for use with air and non-aggressive gases included in the 1
st
, 2
nd
and 3
rd
families (EN
437).
Special versions for aggressive gases.
The valve is open only when energized: if, for any reason, power supply goes down, the valve
closes immediately (intrinsic safe).
Qualified for continuous service (100% ED).
Size DN65-80 is equipped with flow rate adjustment.
An incorporated fine mesh filter protects the valve seat and disc as well as downstream
components and prevents dirty contamination.
Provided with G1/4 pressure gauge on two sides in both inlet and outlet chamber to connect
manometers, pressure switches, leakage tester or other gas equipments.
The actuator is provided with ISO 4400 plug for easy cabling. The protection class is IP65 (EN
60529).
The actuator is provided with a led to visualize when it is energized.
All components are designed to withstand any mechanical, chemical and thermal condition
occurring during typical service. Effective impregnation and surface treatments have been used
to improve mechanical sturdiness, sealing and resistance to corrosion of the components.
Valves are 100% tested and fully warranted.
WARNING
This control must be installed in compliance with the rules in force.